CN108729599A - A kind of passive type super low energy consumption Building Outside Shading of Window installation is constructed with waterproof sealing - Google Patents

Abstract

The present invention provides a waterproof sealing structure for passive ultra-low energy building external sunshade installation, including a shutter box, the shutter box shown is installed on the outer insulation layer above the window and contacts the upper surface of the shutter box The outer insulation layer is provided with a through groove with an opening outward. One side of the through groove is the upper surface of the shutter box, and the surface of the outer insulation layer above the other side is covered with a drip line. A tubular motor is arranged inside the shutter box. The tubular motor is connected to the power cord, and the power cord passes through the outer insulation layer and the wall through the wire pipe, and a wire box is installed at the outlet of the wire pipe, and polyurethane foaming agent is filled in the wire pipe and sealed, and the outer insulation A waterproof and breathable membrane is provided around the line pipe at the contact point between the layer and the wall. The beneficial effect of the present invention is to avoid the accumulation of water in the inner corner, reduce the probability of water immersion of the sealant at the inner corner, strengthen the waterproof effect of the inner corner, and reduce the risk of heat preservation and moisture; the process measures for the position of the sunshade power line tube can further strengthen the sealing and heat preservation of the structure Effect.

Description

A waterproof sealing structure for passive ultra-low energy building external sunshade installation

technical field

The invention belongs to the field of building energy conservation, and in particular relates to a waterproof sealing structure for installing external sunshades of passive ultra-low energy buildings.

Background technique

Passive ultra-low energy consumption green building refers to adapting to climate characteristics and natural conditions, adopting high-efficiency fresh air heat recovery technology through enclosure structures with higher thermal insulation performance and airtightness performance, to minimize the heating and cooling demand of buildings, and to make full use of Renewable energy, buildings that provide a comfortable indoor environment with less energy consumption and can meet the basic requirements of green buildings. Since solar radiation has a significant impact on building energy consumption, according to the "Guidelines for the Design of Passive Ultra-low Energy Buildings in China", appropriate sunshade measures should be considered for south-facing exterior windows in severe cold areas. Sun-shading measures should be considered; in hot summer and cold winter and hot summer and warm winter areas, sun-shading measures should be taken in the east, west and south directions, and the east and west directions should be given priority. Since solar radiant heat will increase air-conditioning energy consumption in summer, but using radiant heat in winter can reduce heating energy consumption, it is the best requirement to use adjustable external sunshade facilities so that the summer sun does not directly irradiate the room and does not affect the winter sunshine. Energy-saving and effective sunshade method.

Roller shutter external shading is one of the most commonly used adjustable external shading forms in residential projects at present, and the installation methods include surface installation and concealed installation. Compared with concealed installation, exposed installation is more convenient for construction and later maintenance. At the same time, in order to reduce thermal bridges in passive ultra-low energy buildings, the external windows are all installed in the form of external hanging. The thickness of the external window frame (about 120-130mm) is added to the thickness of the sunshade roller shutter box (about 150-200mm). Generally around 300mm, which often exceeds the overall thickness of the external insulation (the thickness of the external insulation of passive ultra-low energy buildings is generally 200mm ~ 300mm), which makes it inconvenient to use concealed installation. The installation method is shown in Figure 1.

When the size of the shutter box exceeds the range of the external thermal insulation, an inner corner will be formed at the junction of the shutter box and the external thermal insulation, which is a typical waterproof weak point. Aiming at this weak point, the current basic practice in construction projects is to use silicone sealant for waterproof sealing.

However, studies have shown that water-ultraviolet light and thermal aging-thermal weight loss have a significant impact on the performance of silicone sealants, which will greatly reduce their service life (references: Silicone sealant failure research and its model establishment, Li Qian etc., "Building Energy Conservation" 2016 No. 2), and the surface of the building's exterior wall can reach a high temperature of about 70 degrees Celsius when it is directly exposed to sunlight in addition to being directly washed by rainwater. invalidated. The direct consequence of the failure of the silicone sealant is that water enters the gap between the insulation and the sunshade roller box and accumulates in it for a long time, which will cause the insulation material to be damp, lose its insulation effect or even fall off. Therefore, there are great risks and hidden dangers in conventional methods of using silicone sealants for waterproofing. At the same time, the general sunshade wire (or the connecting rope of the manual crank) is connected to the room without sealing and heat preservation measures, and the outdoor air will enter the roller shutter box and enter the room along the pipe, destroying the airtightness of the room and forming a serious thermal bridge, as shown in the figure 2.

Contents of the invention

In view of this, the present invention aims to propose a waterproof sealing structure for installation of passive ultra-low energy building external sunshade, so as to solve the shortcomings of the above-mentioned problems.

In order to achieve the above object, technical solution of the present invention is achieved in that way:

A waterproof sealing structure for passive ultra-low energy building external sunshade installation, including a shutter box, the shutter box shown is installed on the outer insulation layer above the window, and the outer insulation layer at the contact with the upper surface of the shutter box There is a through groove opening outward, one side of the through groove is the upper surface of the shutter box, and the surface of the outer insulation layer above the other side of the through groove is laid with a drip line, and a tubular Motor, the tubular motor is connected with a power cord, the power cord passes through the outer insulation layer and the wall through the wire pipe, and a wire box is installed at the outlet of the wire pipe, and polyurethane foaming agent is filled in the wire pipe. The wire pipe opening is sealed with a sealant at the wire passing box, and a waterproof and breathable membrane is provided around the wire pipe at the contact point between the outer insulation layer and the wall.

Further, silicone sealant is coated on the contact between the outer insulation layer and the shutter box.

Further, the line pipe is a PVC line pipe.

Further, the slope of the upper surface of the roller shutter box is 3%, and slopes downward along the outdoor.

Further, the shutter box is equipped with a shutter shaft, and one end of the shutter shaft is connected with a tubular motor.

Compared with the prior art, the waterproof sealing structure for installation of passive ultra-low energy building external sunshade of the present invention has the following advantages:

(1) The waterproof sealing structure for passive ultra-low energy building external sunshade installation according to the present invention improves the drainage efficiency, reduces the accumulation of water in the inner corner, thereby reduces the probability of the inner corner and the sealant being soaked in water, and strengthens the waterproof at the inner corner effect, significantly reducing the risk of heat preservation and moisture hazards;

(2) The waterproof sealing structure for installation of passive ultra-low energy building external sunshade of the present invention adopts thermal insulation and sealing measures at the external sunshade line pipe to prevent outdoor air from entering the room along the line pipe, which enhances the airtightness of the room and reduces heat dissipation. Bridge function, and at the same time, the structure does not change the power supply of the original equipment, which avoids adverse effects on later maintenance.

Description of drawings

The drawings constituting a part of the present invention are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Figure 1 is a schematic diagram of the installation method of the external sunshade of the roller shutter of the passive ultra-low energy building;

Figure 2 is a schematic diagram of the thermal bridge when the outer sunshade line pipe is not sealed;

Fig. 3 is a structural schematic diagram of a waterproof sealing structure for installation of passive ultra-low energy building external sunshade according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of a thermal bridge at the line pipe according to an embodiment of the present invention.

Explanation of reference signs:

1-rolling shutter box; 2-outer insulation layer; 3-drip line; 4-silicone sealant; 5-wall; 6-polyurethane foaming agent; 7-power cord; 8-waterproof and breathable membrane; 9-over Wire box; 10 - Sealant.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on specific situations.

The present invention will be described in detail below with reference to the accompanying drawings and examples.

As shown in Fig. 3, a kind of waterproof sealing structure for the installation of passive ultra-low energy building external sunshade comprises a rolling shutter box 1, the rolling shutter box 1 shown is installed on the outer insulation layer 2 above the window, and is connected with the rolling shutter The outer thermal insulation layer 2 at the contact point of the upper surface of the box 1 is provided with a through groove opening outward, one side of the through groove is the upper surface of the rolling shutter box 1, and the surface of the outer thermal insulation layer 2 above the other side of the through groove is laid There is a drip line 3, and a tubular motor is arranged in the shutter box 1, and the tubular motor is connected with a power cord 7, and the power cord 7 passes through the outer insulation layer 2 and the wall body 5 through the line pipe, and the line pipe exits Install the wire box 9 at the wire pipe, fill the polyurethane foaming agent 6 in the wire pipe, seal the wire pipe mouth with a sealant 10 at the wire pipe, and seal the wire pipe mouth at the contact point between the outer insulation layer 2 and the wall body 5 A waterproof breathable membrane 8 is arranged around the line pipe.

Silicone sealant 4 is coated on the contact between the outer insulation layer 2 and the shutter box 1 .

The mouth of the line pipe is sealed by a sealant 10 .

The line pipe is a PVC line pipe.

The slope of the upper surface of the roller shutter box 1 is 3%, and it slopes downwards along the outdoor.

The shutter box 1 is equipped with a shutter shaft, and one end of the shutter shaft is connected with a tubular motor.

The working process of this embodiment is as follows:

A through groove opening outwards is provided at the inner corner of the said roller shutter box 1 and the external thermal insulation, and a drip line 3 is added at the outer thermal insulation place, so that most of the rainwater can be directly dropped on the surface of the roller shutter box 1 by the thermal insulation drip line 3 Draining quickly without entering the inner corner can improve the drainage efficiency and reduce the accumulation of water in the inner corner, thereby reducing the probability of water immersion in the inner corner and the silicone sealant 4 . At the same time, setting the through groove with the opening outward also forms a shield for the 4 parts of the silicone sealant, so that it will not be exposed to direct sunlight, which can greatly reduce the temperature of this part, and greatly weaken the water-ultraviolet light and thermal aging- Thermal weight loss affects the performance of the silicone sealant 4, thereby improving the service life of the silicone sealant 4. At the same time, through this kind of through-groove structure treatment, the weak waterproof parts of the inner corners are no longer simply protected by sealants, and most of the water is prevented from intruding into the inner corners, and finally through the sealing Glue is used for further protection, thereby greatly enhancing the waterproof effect of this part, and significantly reducing the risk of heat preservation and damp. This structural design can also be used for waterproofing treatment of building decoration, railings, and other materials such as metal and external wall insulation to form corners that are prone to water accumulation.

The line pipe enters the indoor part and installs a line box 9, and the line pipe connected to the outdoor is sealed at the line box 9. The sealing method is to first fill the polyurethane foaming agent in the line pipe. While sealing the polyurethane foaming agent, it can also play a role in heat preservation to reduce the heat bridge (the heat bridge situation of heat preservation and sealing treatment is shown in Figure 4), and then The online nozzle is further sealed and protected with a sealant 10 . After passing through the wire box 9, the power line 7 continues to be connected to the power supply of the sunshade system. This design prevents outdoor air from entering the room along the line pipe, enhances the airtightness of the room, and reduces the effect of thermal bridges. As shown in Figure 4, through calculation and simulation, this method of heat preservation and airtightness is adopted at the line pipe, and the heat transfer of this structural node The coefficient is reduced by 0.14W/㎡·k (from 0.30W/㎡·k to 0.14W/㎡·k), under the same indoor and outdoor temperature conditions (outdoor -18 ℃, indoor 20 ℃), the enclosure structure The temperature at the inner surface increased by about 1.6°C (from 17.6°C to 19.2°C). Because this method is sealed at the wire-passing box 9, the power supply of the original equipment is not changed, so it also avoids adverse effects on later maintenance. This design structure can also be applied to the sealing treatment of wire pipes in other situations where wire pipes enter the room from the outside.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (5)

1. a kind of passive type super low energy consumption Building Outside Shading of Window installation is constructed with waterproof sealing, it is characterised in that：Including roller shutter box, institute Show that roller shutter box is mounted on the external thermal insulation above window, and is equipped with and opens with the external thermal insulation of roller shutter box upper surface contact position The side of the outside straight slot of mouth, the straight slot is roller shutter box upper surface, the external thermal insulation surface paving above the straight slot other side Equipped with drip, tube shaped electric machine is equipped in the roller shutter box, the tube shaped electric machine is connected with power cord, and the power cord passes through line Pipe installs connection box across external thermal insulation and wall, and in spool exit, and polyurethane foams is filled in the spool, The spool mouth is sealed with fluid sealant at the connection box, waterproof is equipped with around the spool of external thermal insulation and wall contact position Ventilated membrane.

2. a kind of passive type super low energy consumption Building Outside Shading of Window installation according to claim 1 is constructed with waterproof sealing, special Sign is：The external thermal insulation is coated with silicone sealant with roller shutter box contact position.

3. a kind of passive type super low energy consumption Building Outside Shading of Window installation according to claim 1 or 2 is constructed with waterproof sealing, It is characterized in that：The spool is PVC spools.

4. a kind of passive type super low energy consumption Building Outside Shading of Window installation according to claim 1 is constructed with waterproof sealing, special Sign is：The gradient of the roller shutter box upper surface is 3%, and is tilted down along outdoor.

5. a kind of passive type super low energy consumption Building Outside Shading of Window installation according to claim 1 is constructed with waterproof sealing, special Sign is：Curtain rolling shaft is housed, one end of the curtain rolling shaft is connected with tube shaped electric machine in the roller shutter box.